Fastening means for cams and the like.



N0. 859,093. PATENTED JULY 2, 1907.

S. MASTERS. FASTENING MBA 0R 0 S AND THE LIKE. APPLIOA FILE 3 23,1908.

UNITED STATES PATENT OFFICE.

FASTENING MEANS FOR CAMS AND THE LIKE.

Specification of Letters Patent.

Patented July 2, 1907.

Application filed JuneZS, 1906. Serial No. 323,067-

To all whom it may concern:

Be it known that I, STEPHEN MASTERS, a British subject, residing at theNew Heriot Gold Mining Company, Limited, Cleveland, in the Colony of theTransvaal, have invented certain new and useful Improvements inFastening Means for Cams and the Like, of which the following is aspecification, reference being had therein to the accompanying drawing.

This invention relates to an improved construction adapted for use inconnection with 'cams, split pulleys and the like of that class whichare formed in two parts and adapted to be applied and removed to andfrom a shaft without unseating the same from its bearings. In this classof devices it is highly desirable to provide the separable parts ormembers with means serving not only to prevent radial but also toprevent longitudinal displacement of said member with respect to theshaft. It is further desirable in locking the separable members in placeto avoid as much as possible the employment of separate locking membersand therefore the most efficient devices, and those which withstand thegreatest strain and wear, are those which are provided with integralinterlocking parts.

The device of this invention therefore comprises a member, which may beeither a cam, a pulley or other similar device, and which is dividedinto two elements each being provided with interlocking members adapted,when thrown into engagement with each other to effectively preventeither radial or longitudinal displacement.

In the most improved embodiment of the device means is provided forforcing said elements into looking engagement and said means serves topositively engage one of said members and the shaft in such a manner asto effectively lock said members against rotation.

The invention will be more fully explained in connection with theaccompanying drawing and will be more particularly pointed out andascertained in and by the appended claims.

In the drawingz-Figure I illustrates in cross section a shaft to whichis secured a two part cam designed for stamp mills wherein there isembodied the main features of my invention, the cam being shown inelevation. Fig. II. is a perspective view of one portion of said camillustrating the same detached from its co-operative part. Fig. III. isa perspective view of the remaining portion of the cam, the cam portionsbeing broken away.

Like numerals of reference designate similar parts throughout thedifferent figures of the drawing.

As shown in the drawingz+The cam members 3 are provided with a hubportion or member divided into two elements, 1 and 2. Preferably the cammembers 3 are formed integral with the member 1- which as shownconstitutes the major portion of the hub, the

Said element 1 is also laterally recessed at 15, prefer.

ably on both sides to form locking ways the upper walls 13 thereof beinginclined downwardly. Preferably midway between the ends of said recessesor looking ways 15 the upper walls 13 are recessed at 10 to providelocking notches the purpose of which will hereinafter more fully appear.The side portions of said element I extend upwardly from the wall 13forming parallel engaging faces 8. The other or remaining element 2 isprovided with lateral extensions 7 adapted to seat in the locking ways15. The upper portions 16 of said extensions 7 are inclined upwardly andare adapted to form an interlocking engagement with the walls 13 in amanner to prevent radial displacement of the elements 2 and 1.Preferably midway between the ends of said element 2 there are providedlocking lugs 9 adapted to engage the notches or recesses 10 and preventlongitudinal displacement of said elements. Means is provided forforcing said elements 1 and 2 into locking engagement so that theirinterfitting parts serve to prevent radial and longitudinal displacementand preferably said means in performing the function also serves to locksaid members against rotation on shaft 6. As shown, a key 11 is providedto perform this dual function said key engaging the groove or keyway 14in the element 1 and a similar groove or keyway in the shaft 6.

In all devices of this character, especially with cams designed forheavy work and where the thrust or strain is intermittent instead ofconstant, it is necessary to provide means for positively locking theparts against rotation and it will be seen from the foregoingconstruction that this feature is not only fully realized but thelocking parts themselves are provided with interlocking members formedintegral so as to dispense with the usual separate parts for preventinglongitudinal or radial displacement.

I claim:

1. A divided cam provided with a boss portion, slotted out from the boreto pass over the cam shaft, a block fitting such slot, there beinginterlocking longitudinal side shoulders upon the parts, and lugs uponthe one part coacting with recesses upon the other part to preventrelative longitudinal movement of the parts, and means for forcing theshoulders together.

2. In combination, a shaft, a member divided into two elements adaptedto embrace said shaft, each element being provided with integralco-operating interlocking portions for preventing radial displacement ofsaid elements with respect to each other, and each of said elementsbeing also provided with integral co-operating interlocking portions forpreventing longitudinal displacement of said elements with respect toeach other, and means for forcing said elements into interlockingengagement with each other and locking said elements non-rotatively uponthe shaft.

3. In combination, a shaft, a member divided into two elements adaptedto embrace said shaft, each element being provided with integralco-operating interlocking portions for preventing radial displacement ofsaid elements with respect to each other, and each of said elementsbeing also provided with integral cooperating interlocking portions forpreventing longitudinal displacement of said elements' with respect toeach other, and a key engaging key-ways in said shaft and in one of saidelements, said key being of size snfiicient to force said elements intointerlocking engagement with each other, said key also locking saidelements non-rotatively upon the shaft.

In testimony whereof I aflix my signature in presence of two witnesses.

STEPHEN MASTERS.

Witnesses I-IAnoLn ERNEST KISCH, JABEZ WARREN VENNING.

